Still deciding what to wear to prom? Well, here's what not wear. Don't make the same fashion mistakes as these not-so-stylish stars!

Nicki Minaj

Nicki Minaj

Even on Pink Friday, a Barbie tutu, troll tights, and mega-high moon boots is a hard look to pull off. We love Nicki for always having fun with fashion, but if you're wearing three out of four things you would have rocked as a kid, it's time to change.

Teresa Palmer

Teresa Palmer

A movie premiere isn't the time to let it all hang out and neither is prom. Dear Theresa Palmer, your bod is in great shape (congrats!), but please try buying a whole dress next time, not just parts of one. This look is calling for all sorts of wardrobe malfunctions!